Posted 20 October 2013 - 12:00 PM
Quick and easy answer to this is that no built in nav can compare to a dedicated tomtom. They may gain signal slightly faster with a bigger antenna but as far as features go a tomtom is good bang for your buck. Updates on built in units are also expensive and very limited. It's really a compromise to what do you really want? Built in unit is easier and less hassle while a tomtom has far better options finding locations and addresses that aren't 100% accurate. My built in ford nav lets me down every so often with finding post codes and going by roads and so on is difficult so I still have my tomtom in the glove box. If you're using a sat nav very often like every day get a tomtom. If not go for the built in ford unit.